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What are the differences between bearings and bearing shells

Published:

2022-11-18 13:33

1. The definitions of bearings and bearing shells are different

Bearing is an important part of modern mechanical equipment. Its main function is to support the mechanical rotator, reduce its friction coefficient in the movement process and ensure its rotation accuracy.

The bearing bush is the contact part between the sliding bearing and the journal. It is a semi cylindrical surface in the shape of a bush and is very smooth. It is generally made of wear-resistant materials such as bronze and antifriction alloy. In special cases, it can be made of wood, engineering plastics or rubber.

2. The working principles of bearings and bearing shells are different

In terms of its function, the bearing should be a support, that is, it is literally used to support the bearing, but this is only a part of its function, and the essence of supporting it is to be able to bear the radial load. It can also be understood that it is used to fix the shaft. The quick, easy and optimal automatic selection of bearings is included. It is to fix the shaft so that it can only rotate and control its axial and radial movement.

When the bearing bush and sliding bearing work, a thin oil film is required between the bearing bush and the shaft for lubrication. If the lubrication is poor, there will be direct friction between the bearing bush and the shaft, and the friction will produce very high temperature;

Although the bearing bush is made of special heat-resistant alloy material, the high temperature caused by direct friction is still enough to burn it out. Bearing bush may also burn due to excessive load, high temperature, impurities in lubricating oil or abnormal viscosity. The sliding bearing was damaged after the pad was burned.